#include <stdio.h>
#include <string.h>
void reverse_string(char *str) {
// Your logic here
int str_length = strlen(str) - 1;
char *tail = str + str_length;
char temp;
for(int i=0; i <= str_length/2; i++){
temp = *tail;
*tail = *str;
*str = temp;
str++; tail--;
}
}
int main() {
char str[101];
fgets(str, sizeof(str), stdin);
// Remove newline
int i = 0;
while (str[i] != '\0') {
if (str[i] == '\n') {
str[i] = '\0';
break;
}
i++;
}
reverse_string(str);
printf("%s", str);
return 0;
}